1 files changed, 95 insertions, 0 deletions
diff --git a/winsup/cygwin/include/cygwin/sem.h b/winsup/cygwin/include/cygwin/sem.h
new file mode 100644
index 000000000..a3ece9f8a
--- /dev/null
+++ b/winsup/cygwin/include/cygwin/sem.h
@@ -0,0 +1,95 @@
+/* sys/sem.h
+
+   Copyright 2002 Red Hat Inc.
+   Written by Conrad Scott <conrad.scott@dsl.pipex.com>
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#ifndef _SYS_SEM_H
+#define _SYS_SEM_H
+
+#include <cygwin/ipc.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* Semaphore operation flags:
+ */
+#define SEM_UNDO		/* Set up adjust on exit entry. */
+
+/* Command definitions for the semctl () function:
+ */
+#define GETNCNT    0x3000	/* Get semncnt. */
+#define GETPID     0x3001	/* Get sempid. */
+#define GETVAL     0x3002	/* Get semval. */
+#define GETALL     0x3003	/* Get all cases of semval. */
+#define GETZCNT    0x3004	/* Get semzcnt. */
+#define SETVAL     0x3005	/* Set semval. */
+#define SETALL     0x3006	/* Set all cases of semval. */
+
+#define SEM_STAT   0x3010	/* For ipcs(8). */
+#define SEM_INFO   0x3011	/* For ipcs(8). */
+
+struct semid_ds
+{
+  struct ipc_perm  sem_perm;	/* Operation permission structure. */
+  unsigned short   sem_nsems;	/* Number of semaphores in set. */
+  timestruc_t      sem_otim;	/* Last semop () time. */
+  timestruc_t      sem_ctim;	/* Last time changed by semctl (). */
+  long             sem_spare4[2];
+};
+
+#define sem_otime sem_otim.tv_sec
+#define sem_ctime sem_ctim.tv_sec
+
+struct sembuf
+{
+  unsigned short  sem_num;	/* Semaphore number. */
+  short           sem_op;	/* Semaphore operation. */
+  short           sem_flg;	/* Operation flags. */
+};
+
+/* Buffer type for semctl (IPC_INFO, ...) as used by ipcs(8).
+ */
+struct seminfo
+{
+  unsigned long semmni;		/* Maximum number of unique semaphore
+				   sets, system wide. */
+  unsigned long semmns;		/* Maximum number of semaphores,
+				   system wide. */
+  unsigned long semmsl;		/* Maximum number of semaphores per
+				   semaphore set. */
+  unsigned long semopm;		/* Maximum number of operations per
+				   semop call. */
+  unsigned long semmnu;		/* Maximum number of undo structures,
+				   system wide. */
+  unsigned long semume;		/* Maximum number of undo entries per
+				   undo structure. */
+  unsigned long semvmx;		/* Maximum semaphore value. */
+  unsigned long semaem;		/* Maximum adjust-on-exit value. */
+  unsigned long sem_spare[4];
+};
+
+/* Buffer type for semctl (SEM_INFO, ...) as used by ipcs(8).
+ */
+struct sem_info
+{
+  unsigned long sem_ids;	/* Number of allocated semaphore sets. */
+  unsigned long sem_num;	/* Number of allocated semaphores. */
+};
+
+int semctl (int semid, int semnum, int cmd, ...);
+int semget (key_t key, int nsems, int semflg);
+int semop (int semid, struct sembuf *sops, size_t nsops);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_SEM_H */